// 中间区域拖拽时样式
.exhibitionArea {
  .ghost {
    content: "";
    font-size: 0;
    height: 3px;
    box-sizing: border-box;
    background: red;
    border: 2px solid green;
    outline-width: 0;
    padding: 0;
    overflow: hidden;
  }
}
